Windows 10X can run natively on the Surface Pro 7 and the Lumia 950 XL
It has not even been a week since someone leaked a supposedly near-final build of Windows 10X, Microsoft's new version of Windows 10. While Microsoft marketed Windows 10X for dual-screen PCs during its announcement in October 2019, Windows Central showed that the OS works well on single-screen devices too. However, while Windows Central showcased Windows 10X in a virtual machine, people have booted it running natively on older Microsoft hardware.
Additionally, Gustave Monce (@gus33000) has tweeted photos of Windows 10X running on a Lumia 950 XL. Monce is yet to provide a video of Windows 10X working on the Lumia 950 XL, but the OS is seemingly compatible with Continuum, also. Monce states that he hopes to publish a Windows Full Flash Update (FFU) before too long. The WOA Project, which includes Monce and @ADeltaXForce, have brought Windows on ARM to the Lumia 950 XL, so we would not be surprised if they eventually did the same with Windows 10X. You can read more about the WOA Project on GitHub.
Windows 10X will only run progressive web apps (PWA) and Universal Windows Platform (UWP) apps at launch, and is due to arrive later this year. Microsoft is yet to confirm when Windows 10X, or any machines running it, will launch though. If you would like to play around with Windows 10X, then Albacore has published a Hyper-V only image here.